Docs maintenance: remove external images, article updates

[paulOsinski]

This PR is intended to move externally hosted images into the main repo, along with the following docs updates:

• Add Universal Importer / Dojo-CLI docs
• update DefectDojo Pro Changelog
• replace all externally hosted (on Intercom) images with images on the repo, and update all image refs to use those hosted images
• rework Request A Trial article with updated language

[sc-8918]
[sc-9103]

[dryrunsecurity]

DryRun Security Summary

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Summary:

There are no code changes provided in the input, so I do not have any specific observations or recommendations to make. As an application security engineer, I would typically review any code changes in a pull request to ensure they do not introduce any security vulnerabilities or unintended consequences. However, without any changes to review, I cannot provide a meaningful summary or analysis.

Files Changed:

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Code Analysis

We ran 9 analyzers against 30 files and 0 analyzers had findings. 9 analyzers had no findings.

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[mtesauro]

Follow on to #11258

[mtesauro]

Approved

[paulOsinski]

some of these filenames were going to break Windows builds as per issue: #11366

I have fixed those references but I imagine I will have to rebase once this hotfix is accepted: #11368